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AB-1704 • 2026

Greenhouse gases: embodied carbon building materials.

Greenhouse gases: embodied carbon building materials.

Energy
Active

The official status still shows this bill as active or still awaiting another formal step.

Sponsor
Mark González
Last action
Official status
Senate - Appropriations
Effective date
Not listed

Plain English Breakdown

The official text contains conflicting phrasing ('reached cost parity with' vs. 'would be cost effective'), suggesting an amendment or editing error in the source provided; both concepts are treated as a single requirement here.

AB-1704: Checking Costs Before New Building Material Rules Start

This law requires the State Air Resources Board to check if low-carbon building materials are cost-effective compared to standard ones before starting new rules, and it allows a delay of up to 10 years if they are not.

What This Bill Does

  • Requires the board to determine if using lower embodied carbon materials is cost-effective during their first two years of use compared to conventional building materials before implementing existing provisions.
  • Allows the board to delay or suspend implementation of those provisions for at least 5 years but no more than 10 years total if low-carbon options are not found to be cost-effective.

Who It Names or Affects

  • The State Air Resources Board

Terms To Know

Embodied carbon
Greenhouse gas emissions associated with building materials, as referenced in the bill's title and context.
Cost parity or cost-effective
A comparison of costs between lower embodied carbon materials and conventional building materials during their first two years of use.

Limits and Unknowns

  • The bill does not define the specific method for calculating whether materials are 'cost effective' or have reached 'cost parity'.
  • It is unknown if the board will determine that costs meet the requirement, which would trigger a delay.
  • The text refers to delaying implementation of provisions but does not specify exactly when those original deadlines were set.

Bill History

  1. California Legislative Information

    Senate - Appropriations

Official Summary Text

Greenhouse gases: embodied carbon building materials.